00001 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development Laboratory (LRDE) 00002 // 00003 // This file is part of Olena. 00004 // 00005 // Olena is free software: you can redistribute it and/or modify it under 00006 // the terms of the GNU General Public License as published by the Free 00007 // Software Foundation, version 2 of the License. 00008 // 00009 // Olena is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00016 // 00017 // As a special exception, you may use this file as part of a free 00018 // software project without restriction. Specifically, if other files 00019 // instantiate templates or use macros or inline functions from this 00020 // file, or you compile this file and link it with other files to produce 00021 // an executable, this file does not by itself cause the resulting 00022 // executable to be covered by the GNU General Public License. This 00023 // exception does not however invalidate any other reasons why the 00024 // executable file might be covered by the GNU General Public License. 00025 00026 #ifndef MLN_CORE_CONCEPT_VALUE_ITERATOR_HH 00027 # define MLN_CORE_CONCEPT_VALUE_ITERATOR_HH 00028 00034 # include <mln/core/concept/iterator.hh> 00035 00036 00037 namespace mln 00038 { 00039 00049 template <typename E> 00050 struct Value_Iterator : public Iterator<E> 00051 { 00052 /* 00053 typedef value; 00054 operator value() const; 00055 */ 00056 00057 protected: 00058 Value_Iterator(); 00059 }; 00060 00061 00074 template <typename E> 00075 std::ostream& operator<<(std::ostream& ostr, const Value_Iterator<E>& v); 00076 00077 00078 00079 # ifndef MLN_INCLUDE_ONLY 00080 00081 template <typename E> 00082 inline 00083 Value_Iterator<E>::Value_Iterator() 00084 { 00085 typedef mln_value(E) value; 00086 value (E::*m)() const = & E::operator value; 00087 m = 0; 00088 } 00089 00090 template <typename E> 00091 inline 00092 std::ostream& operator<<(std::ostream& ostr, const Value_Iterator<E>& v) 00093 { 00094 mln_precondition(exact(v).is_valid()); 00095 return ostr << mln_value(E)(exact(v)); 00096 } 00097 00098 # endif // ! MLN_INCLUDE_ONLY 00099 00100 } // end of namespace mln 00101 00102 00103 #endif // ! MLN_CORE_CONCEPT_VALUE_ITERATOR_HH
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